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From: Jiri Pirko <jiri@resnulli.us>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: f.fainelli@gmail.com, vivien.didelot@gmail.com, andrew@lunn.ch,
	davem@davemloft.net, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, georg.waibel@sensor-technik.de
Subject: Re: [PATCH v3 net-next 16/24] net: dsa: sja1105: Add support for VLAN operations
Date: Sat, 13 Apr 2019 22:56:29 +0200	[thread overview]
Message-ID: <20190413205629.GD2268@nanopsycho.orion> (raw)
In-Reply-To: <20190413012822.30931-17-olteanv@gmail.com>

Sat, Apr 13, 2019 at 03:28:14AM CEST, olteanv@gmail.com wrote:
>VLAN filtering cannot be properly disabled in SJA1105. So in order to
>emulate the "no VLAN awareness" behavior (not dropping traffic that is
>tagged with a VID that isn't configured on the port), we need to hack
>another switch feature: programmable TPID (which is 0x8100 for 802.1Q).
>We are reprogramming the TPID to a bogus value (ETH_P_EDSA) which leaves
>the switch thinking that all traffic is untagged, and therefore accepts
>it.
>
>Under a vlan_filtering bridge, the proper TPID of ETH_P_8021Q is
>installed again, and the switch starts identifying 802.1Q-tagged
>traffic.
>
>Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
>Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
>---
>Changes from v3:
>Changed back to ETH_P_EDSA.
>
>Changes from v2:
>Changed the TPID from ETH_P_EDSA (0xDADA) to a newly introduced one:
>ETH_P_DSA_8021Q (0xDADB).
>
> drivers/net/dsa/sja1105/sja1105_main.c        | 254 +++++++++++++++++-
> .../net/dsa/sja1105/sja1105_static_config.c   |  38 +++
> .../net/dsa/sja1105/sja1105_static_config.h   |   3 +
> 3 files changed, 293 insertions(+), 2 deletions(-)
>

[...]


>+#define sja1105_vlan_filtering_enabled(priv) \
>+	(((struct sja1105_general_params_entry *) \
>+	((struct sja1105_private *)priv)->static_config. \
>+	tables[BLK_IDX_GENERAL_PARAMS].entries)->tpid == ETH_P_8021Q)

This is unreadable. Please have it as function.


  reply	other threads:[~2019-04-13 20:56 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-13  1:27 [PATCH v3 net-next 00/24] NXP SJA1105 DSA driver Vladimir Oltean
2019-04-13  1:27 ` [PATCH v3 net-next 01/24] lib: Add support for generic packing operations Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 02/24] net: dsa: Fix pharse -> phase typo Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 03/24] net: dsa: Store vlan_filtering as a property of dsa_port Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 04/24] net: dsa: mt7530: Use vlan_filtering property from dsa_port Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 05/24] net: dsa: Add more convenient functions for installing port VLANs Vladimir Oltean
2019-04-16 23:49   ` Florian Fainelli
2019-04-13  1:28 ` [PATCH v3 net-next 06/24] net: dsa: Call driver's setup callback after setting up its switchdev notifier Vladimir Oltean
2019-04-13 15:05   ` Andrew Lunn
2019-04-13  1:28 ` [PATCH v3 net-next 07/24] net: dsa: Optional VLAN-based port separation for switches without tagging Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 08/24] net: dsa: Be aware of switches where VLAN filtering is a global setting Vladimir Oltean
2019-04-16 23:54   ` Florian Fainelli
2019-04-13  1:28 ` [PATCH v3 net-next 09/24] net: dsa: b53: Let DSA handle mismatched VLAN filtering settings Vladimir Oltean
2019-04-16 23:52   ` Florian Fainelli
2019-04-13  1:28 ` [PATCH v3 net-next 10/24] net: dsa: Unset vlan_filtering when ports leave the bridge Vladimir Oltean
2019-04-13 15:11   ` Andrew Lunn
2019-04-16 23:59   ` Florian Fainelli
2019-04-13  1:28 ` [PATCH v3 net-next 11/24] net: dsa: mt7530: Let DSA handle the unsetting of vlan_filtering Vladimir Oltean
2019-04-13 15:12   ` Andrew Lunn
2019-04-16 23:59   ` Florian Fainelli
2019-04-13  1:28 ` [PATCH v3 net-next 12/24] net: dsa: Copy the vlan_filtering setting on the CPU port if it's global Vladimir Oltean
2019-04-13 15:23   ` Andrew Lunn
2019-04-13 15:37     ` Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 13/24] net: dsa: Allow drivers to filter packets they can decode source port from Vladimir Oltean
2019-04-13 15:39   ` Andrew Lunn
2019-04-13 15:48     ` Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 14/24] net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch Vladimir Oltean
2019-04-13 15:42   ` Andrew Lunn
2019-04-13 15:46     ` Vladimir Oltean
2019-04-13 16:44       ` Andrew Lunn
2019-04-13 21:29         ` Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 15/24] net: dsa: sja1105: Add support for FDB and MDB management Vladimir Oltean
2019-04-13 20:58   ` Jiri Pirko
2019-04-13  1:28 ` [PATCH v3 net-next 16/24] net: dsa: sja1105: Add support for VLAN operations Vladimir Oltean
2019-04-13 20:56   ` Jiri Pirko [this message]
2019-04-13 21:39     ` Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 17/24] net: dsa: sja1105: Add support for ethtool port counters Vladimir Oltean
2019-04-13 20:53   ` Jiri Pirko
2019-04-13 21:55     ` Vladimir Oltean
2019-04-14  8:34       ` Jiri Pirko
2019-04-13  1:28 ` [PATCH v3 net-next 18/24] net: dsa: sja1105: Add support for traffic through standalone ports Vladimir Oltean
2019-04-13 16:37   ` Andrew Lunn
2019-04-13 21:27     ` Vladimir Oltean
2019-04-13 22:08       ` Vladimir Oltean
2019-04-13 22:26         ` Vladimir Oltean
2019-04-14 16:17           ` Andrew Lunn
2019-04-14 18:53             ` Vladimir Oltean
2019-04-14 19:13               ` Andrew Lunn
2019-04-14 22:30                 ` Vladimir Oltean
2019-04-15  3:07                   ` Andrew Lunn
2019-04-17  0:09                     ` Florian Fainelli
2019-04-14 16:05       ` Andrew Lunn
2019-04-14 18:42         ` Vladimir Oltean
2019-04-14 19:06           ` Andrew Lunn
2019-04-17  0:16       ` Florian Fainelli
2019-04-13  1:28 ` [PATCH v3 net-next 19/24] net: dsa: sja1105: Add support for Spanning Tree Protocol Vladimir Oltean
2019-04-13 16:41   ` Andrew Lunn
2019-04-13  1:28 ` [PATCH v3 net-next 20/24] net: dsa: sja1105: Error out if RGMII delays are requested in DT Vladimir Oltean
2019-04-13 16:49   ` Andrew Lunn
2019-04-13 20:47   ` Jiri Pirko
2019-04-13 21:31     ` Vladimir Oltean
2019-04-14  8:35       ` Jiri Pirko
2019-04-13  1:28 ` [PATCH v3 net-next 21/24] net: dsa: sja1105: Prevent PHY jabbering during switch reset Vladimir Oltean
2019-04-13 16:54   ` Andrew Lunn
2019-04-13  1:28 ` [PATCH v3 net-next 22/24] net: dsa: sja1105: Reject unsupported link modes for AN Vladimir Oltean
2019-04-13  1:28 ` [PATCH v3 net-next 23/24] Documentation: net: dsa: Add details about NXP SJA1105 driver Vladimir Oltean
2019-04-17  0:20   ` Florian Fainelli
2019-04-13  1:28 ` [PATCH v3 net-next 24/24] dt-bindings: net: dsa: Add documentation for " Vladimir Oltean

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